Magnetic junction switching by joint action of current pulse and magnetic field: numerical simulation

Gulyaev, Yu. V.; Zilberman, P. E.; Chigarev, S. G.; Épshteǐn, É. M.

doi:10.1134/s1063785011020234

Cited by 2 publications

(2 citation statements)

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“…(10) and (17) into these equations, we find that to satisfy conditions (19), the terms (20) in Eq. (10) must satisfy the equations (21) Let us decompose the sought vector X in three mutually perpendicular vectors: (20), we obtain (23) It can be seen that c ~ α/ , while Λ ~ α/a 2 , where a is the lattice constant [26].…”

Section: Boundary Conditionsmentioning

confidence: 97%

“…In addition, the ferromagnetic resonance frequency is quite low in this case. In view of the above mentioned difficulties, other methods were also proposed for reducing the threshold (e.g., using a high spin injection level [8] or joint action of the external magnetic field and polar ization current [9,10]). The employment of ferromag net-antiferromagnet junctions, in which the ferro magnet (FM) serves as an injector of spin polarized electrons, and the antiferromagnetic (AFM) layer in an external magnetic field perpendicular to the easy axis may have a low magnetization because the mag netic sublattices are "canted," which facilitates the lowering of the threshold [11].…”

Section: Introductionmentioning

confidence: 99%

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Effect of current on magnetization oscillations in the ferromagnet-antiferromagnet junction

Gulyaev

Zilberman

Épshteǐn

2012

J. Exp. Theor. Phys.

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The effect of spin polarized current on the steady state magnetization and oscillations of antifer romagnet magnetization in a ferromagnetic-antiferromagnetic magnetic junction is analyzed. The mac rospin approximation is generalized to describe antiferromagnets. The canted configuration of the antiferro magnet and the resultant magnetic moment are produced by the application of an external magnetic field. The resonance frequency, damping, and threshold current density corresponding to the emergence of insta bility are calculated. The possibility of generating weakly damped magnetization oscillations in the terahertz range is demonstrated. The effect of fluctuations on the canted configuration of the antiferromagnet is dis cussed.

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